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In the given figure, TB is a chord which...

In the given figure, TB is a chord which passes through the centre of the circle. PT is a tangent to the circle at the point. T on the circle. If PT = 10 cm, PA = 5 cm and AB = x cm, then the radius of the circle is:
दिए गए चित्र में, TB एक जीवा है जो वृत्त के केंद्र से होकर गुजरता है। PT, वृत्त के बिंदु T पर वृत्त की स्पर्शरेखा है। यदि PT= 10 सेमी, PA=5 सेमी और AB = x सेमी, तो वृत्त का त्रिज्या है

A

`5 sqrt3`

B

`6 sqrt 5`

C

`3 sqrt 5`

D

`10 sqrt3`

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